+++ /dev/null
-/* Build with
- gcc -lm -lz -O2 -Wall `pkg-config --libs --cflags cairo` -o broadway broadway.c demo.c
-*/
-
-#include "broadway.h"
-#include <math.h>
-#include <unistd.h>
-#include <stdint.h>
-#include <cairo.h>
-
-static void
-diff_surfaces (cairo_surface_t *surface,
- cairo_surface_t *old_surface)
-{
- uint8_t *data, *old_data;
- uint32_t *line, *old_line;
- int w, h, stride, old_stride;
- int x, y;
-
- data = cairo_image_surface_get_data (surface);
- old_data = cairo_image_surface_get_data (old_surface);
-
- w = cairo_image_surface_get_width (surface);
- h = cairo_image_surface_get_height (surface);
-
- stride = cairo_image_surface_get_stride (surface);
- old_stride = cairo_image_surface_get_stride (old_surface);
-
- for (y = 0; y < h; y++)
- {
- line = (uint32_t *)data;
- old_line = (uint32_t *)old_data;
-
- for (x = 0; x < w; x++)
- {
- if ((*line & 0xffffff) == (*old_line & 0xffffff))
- *old_line = 0;
- else
- *old_line = *line | 0xff000000;
- line ++;
- old_line ++;
- }
-
- data += stride;
- old_data += old_stride;
- }
-}
-
-static void
-snippet(cairo_t *cr, int i)
-{
- if (1)
- {
- cairo_save(cr);
- cairo_rotate (cr, i * 0.002);
- /* a custom shape that could be wrapped in a function */
- double x0 = 25.6, /* parameters like cairo_rectangle */
- y0 = 25.6,
- rect_width = 204.8,
- rect_height = 204.8,
- radius = 102.4; /* and an approximate curvature radius */
-
- double x1,y1;
-
- x1=x0+rect_width;
- y1=y0+rect_height;
- if (rect_width/2<radius) {
- if (rect_height/2<radius) {
- cairo_move_to (cr, x0, (y0 + y1)/2);
- cairo_curve_to (cr, x0 ,y0, x0, y0, (x0 + x1)/2, y0);
- cairo_curve_to (cr, x1, y0, x1, y0, x1, (y0 + y1)/2);
- cairo_curve_to (cr, x1, y1, x1, y1, (x1 + x0)/2, y1);
- cairo_curve_to (cr, x0, y1, x0, y1, x0, (y0 + y1)/2);
- } else {
- cairo_move_to (cr, x0, y0 + radius);
- cairo_curve_to (cr, x0 ,y0, x0, y0, (x0 + x1)/2, y0);
- cairo_curve_to (cr, x1, y0, x1, y0, x1, y0 + radius);
- cairo_line_to (cr, x1 , y1 - radius);
- cairo_curve_to (cr, x1, y1, x1, y1, (x1 + x0)/2, y1);
- cairo_curve_to (cr, x0, y1, x0, y1, x0, y1- radius);
- }
- } else {
- if (rect_height/2<radius) {
- cairo_move_to (cr, x0, (y0 + y1)/2);
- cairo_curve_to (cr, x0 , y0, x0 , y0, x0 + radius, y0);
- cairo_line_to (cr, x1 - radius, y0);
- cairo_curve_to (cr, x1, y0, x1, y0, x1, (y0 + y1)/2);
- cairo_curve_to (cr, x1, y1, x1, y1, x1 - radius, y1);
- cairo_line_to (cr, x0 + radius, y1);
- cairo_curve_to (cr, x0, y1, x0, y1, x0, (y0 + y1)/2);
- } else {
- cairo_move_to (cr, x0, y0 + radius);
- cairo_curve_to (cr, x0 , y0, x0 , y0, x0 + radius, y0);
- cairo_line_to (cr, x1 - radius, y0);
- cairo_curve_to (cr, x1, y0, x1, y0, x1, y0 + radius);
- cairo_line_to (cr, x1 , y1 - radius);
- cairo_curve_to (cr, x1, y1, x1, y1, x1 - radius, y1);
- cairo_line_to (cr, x0 + radius, y1);
- cairo_curve_to (cr, x0, y1, x0, y1, x0, y1- radius);
- }
- }
- cairo_close_path (cr);
-
- cairo_set_source_rgb (cr, 0.5, 0.5, 1);
- cairo_fill_preserve (cr);
- cairo_set_source_rgba (cr, 0.5, 0, 0, 0.5);
- cairo_set_line_width (cr, 10.0);
- cairo_stroke (cr);
- cairo_restore(cr);
- }
- if (1)
- {
- double xc = 128.0;
- double yc = 128.0;
- double radius = 100.0;
- double angle1 = (45.0 + i * 5) * (M_PI/180.0); /* angles are specified */
- double angle2 = (180.0 + i * 5) * (M_PI/180.0); /* in radians */
-
- cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
-
- cairo_set_line_width (cr, 10.0);
- cairo_arc (cr, xc, yc, radius, angle1, angle2);
- cairo_stroke (cr);
-
- /* draw helping lines */
- cairo_set_source_rgba (cr, 1, 0.2, 0.2, 0.6);
- cairo_set_line_width (cr, 6.0);
-
- cairo_arc (cr, xc, yc, 10.0, 0, 2*M_PI);
- cairo_fill (cr);
-
- cairo_arc (cr, xc, yc, radius, angle1, angle1);
- cairo_line_to (cr, xc, yc);
- cairo_arc (cr, xc, yc, radius, angle2, angle2);
- cairo_line_to (cr, xc, yc);
- cairo_stroke (cr);
- }
-}
-
-static void
-demo2 (BroadwayOutput *output)
-{
- cairo_t *cr;
- cairo_surface_t *surface, *old_surface;
- BroadwayRect rects[2];
- double da = 0;
- int i;
-
- broadway_output_new_surface(output, 0, 100, 100, 800, 600, 0);
-
- surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
- 800, 600);
- old_surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
- 800, 600);
-
- cr = cairo_create (old_surface);
- cairo_set_source_rgb (cr, 0.0, 0.0, 0.0);
- cairo_rectangle (cr, 0, 0, 800, 600);
- cairo_fill (cr);
- cairo_destroy (cr);
-
- for (i = 0; i < 100; i++)
- {
- cr = cairo_create (surface);
-
- cairo_set_source_rgb (cr, 0.8, 0.8, 0.8);
-
- cairo_rectangle (cr, 0, 0, 800, 600);
- cairo_fill (cr);
-
- snippet(cr, i);
-
- cairo_destroy (cr);
-
- if (i == 0)
- {
- broadway_output_put_rgb (output, 0, 0, 0, 800, 600, 800*4,
- cairo_image_surface_get_data(surface)
- );
- broadway_output_show_surface (output, 0);
- }
- else
- {
- diff_surfaces (surface,
- old_surface);
- broadway_output_put_rgba (output, 0, 0, 0, 800, 600, 800*4,
- cairo_image_surface_get_data(old_surface));
- }
- broadway_output_move_resize_surface (output, 0, 1, 100 + i, 100 + i, 0, 0, 0);
-
- rects[0].x = 500;
- rects[0].y = 0;
- rects[0].width = 100;
- rects[0].height = 100;
- rects[1].x = 600;
- rects[1].y = 100;
- rects[1].width = 100;
- rects[1].height = 100;
- broadway_output_copy_rectangles (output,
- 0,
- rects, 2,
- 400, 0);
-
- broadway_output_flush (output);
-
- cr = cairo_create (old_surface);
- cairo_set_source_surface (cr, surface, 0, 0);
- cairo_paint (cr);
- cairo_destroy (cr);
-
- da += 10;
- usleep (50 * 1000);
- }
-
-
- cairo_surface_destroy (surface);
- broadway_output_destroy_surface(output, 0);
- broadway_output_flush (output);
-}
-
-int
-main (int argc, char *argv[])
-{
- BroadwayOutput *output;
-
- output = broadway_output_new (STDOUT_FILENO, 1);
- demo2(output);
-
- return 0;
-}
projects / ~andy / gtk / commitdiff